Shuttle for weaving-looms.



M. & R. LEMARCHAND 61V. MONTET.

SHUTTLE FOR WEAVING LooMs.

APPLICATION FILED DEC. 3, 1908.

1,008,832. Patented Nov. 14, 1911.

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UNTTED STATES PATENT OFFICE.

MAURICE LEMARCI-IAND, RAYMOND LEMARCHAND, AND VICTOR MONTET, OF ROUEN,

. FRANCE.

SHUTTLE FOR WEAVING-LOOMS.

Specification of Letters Patent.

Patented Nov. 141:, 1911.

T 0 all whom it may concern: v

Be it known that we, MAURICE LEMAR- GHAND, RAYMOND LEMAROHAND, andVICTOR Mon'rn'r, citizens of the Republic of France, residing at 83Boulevard Cauchase, Rouen, Seine Inferieure, in the Republic of France,engineers, have invented certain new and useful Improvements in Shuttlesfor Weaving-Looms, of which the following is a specification.

This invention relates to a shuttle which is designed to stop the loomor to engage a shuttle change mechanism when the bobbin placed in theshuttle is nearly empty.

Our invention consists in arranging in the shuttle an opening capable offreely receiving a feeling finger arranged in front of the lay and ofcombining with this shuttle a stopping device normally held away fromthe said opening by the thread wound around the bobbin and arranged tobe placed automatically in the opening" opposite the feeling finger,when the thread fails, in order to actuate the said finger. The shuttletherefore plays with regard to this finger the same part as a jacquardcard with relation to the needles by means of its holes and full parts.

The accompanying drawing illustrates a shuttle made according to ourinvention with a sliding stopping device.

Figure 1 is an elevation of a portion of the shuttle the tongue beingraised to receive a fresh bobbin. Fig. 2 is a corresponding plan thetongue being lowered. Fig. 3 is a plan in which the stopping device isshown in horizontal section. Fig. l is a transverse section of thetongue sur rounded with a bobbin, in the line A-A, Fig. 1. Figs. 5 and 6aretransverse sections of the stopping device and its guide on the linesB, B, and C, C, Figs. 2 and 3 respectively.

In the front wall of the shuttle we provide a slot 1 in which is fitteda metal frame 2 serving as a guide for the stopping device or key 3. Theframe 2 consists of an elongated block in which is formed a longitudinalslot 4 open at one end; ribs 5 are made on the inner faces of the saidslot from the said open end up to a certain distance from the oppositeend, and these ribs have a curvilinear form as shown in Fig. 3. In.

the slot 4 can slide the key 3 which consists by preference of a blockof fiber or other strong and light material and which is guided on theribs 5 by means of grooves also curvilinear and made in its upper andlower faces as shown in Figs. 5 and 6. After the introduction of the key3 into the slot 4 the open end of the latter is closed by means of asmall metal block 6 which has a screw 7 passing through it and thusserves to fix the frame 2 in the slot in the shuttle.

The key 3 is provided with a projection 8 directed toward the interiorof the shuttle and extending to near the base of the bobbin 9 whichispassed over the tongue 10 so as to be able to abut against the firstturns of the thread wound upon the said bobbin and to thus retain thekey in the position shown in Figs. 1 and 2. The right hand portion ofthe slot 4 is then free and forms a hole in which a feeling finger 11mounted upon the breast beam of the loom can be introduced without anyobstacle. This hole, moreover, is of much larger dimensions than thoseof the finger 11 in order to provide for the difl'erent sizes whichvarious shuttles may have and forthe play of various devices on whichdepend the relative positions of the shuttle and finger. When thereremains on the bobbin only a length of thread corre sponding to a fewpicks, the end of the projection 8 is set free and under the action ofthe shock which is produced at the end of the passage of the shuttle,the key is projected by the inertia toward the end 12 of the frame asshown in Fig. 3. On the forward movement of the lay which follows thestoppage of the shuttle, the key 3 strikes the finger 11 and pushes itback so as to operate a disengaging or shuttle change mechanism. Theforce necessary to push back the finger is borne by the ends of the keyone of which bears against the ribs 5 and the other against the part 12of the frame. By reason of the curvilinear form of the ribs 5 the end ofthe projection 8 moves in an oblique path with relation to the axis ofthe tongue and thus moves away from the last turns of thread remainingof the bobbin. Moreover, the key will be found to be immovable in theposition shown in Fig. 3 through a small vertical pin 13 sliding veryfreely through a hole in the key and engaging by its weight in a recess14 in the lower edge of the frame 2; by this means the key is stoppedduring the two or three passages which the shuttle may still new bobbinthereon.

In order to insure regularity of position of the last turns of thethread of the bobbin in front of the nose of the projection 8 it isadvantageous to alter the usual form of the spring 15 of the tongue 10;instead of bearing against the tongue with its end, the spring is bentat a certain distance from the latter at 16 and the end portion 17 isturned up so as to enable it to be applied against the inner wall of thebobbin 9; when the latter is slid on to the tongue it gradually flattensthe middle part of the spring sothat the end 17 oscillating around thepoint 16 tends to rise and consequently distend the base of the bobbinas shown in Fig. 4, causing a flattening of the same against the lateralwalls of the tongue. The inequalities in the shape or diameter of thebobbins are thus allowed for in a very simple manner.

With our improvements the thread does not suffer any wear as the key isvery light and is only pressed against the thread by the action of theinertia which is so much the weaker as the play of the said key isnormally m'Z or very small.

Claims.

1. The combination of a shuttle having a lateral opening, a slidemovable in the said opening in the longitudinal direction of theshuttle, and a heel on the said slide adapted to abut against the yarnwound around the cop or pirn of the shuttle and thus maintain the slideat one end of the opening so long as the pirn is carrying sufiicientyarn, the said slide being thrown by the inertia to the other end of theopening, when the yarn fails, at the end of the stroke of the shuttle,

substantially as described.

2. The combination of a shuttle having a lateral opening, aslide movablein the said opening in the longitudinal direction of the shuttle, thelower wall of said opening having a cavity made therein, and a smallbolt slidable in a vertical hole of the slide, the

said bolt being adapted to engage in the said cavity when the slidecomes to one end of the lateral opening of the shuttle.

In testimony that we claim the foregoing as our invention, we havesigned our names in presence of two subscribing witnesses. MAURICELEMARCHAND. RAYMOND LEMARCHAND. VICTOR MONTET. Witnesses:

EDOUARD RIDAULT, PAUL RIDAULT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

